Life Changes. Variation. The Cell

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Cells are a bit like tiny factories.
They take in materials,
and they send out other materials.

Cells are made of chemicals.
The most important chemicals are proteins, RNA and DNA.

There are many different sorts of proteins.
Cells are made with proteins.
Proteins, RNA and DNA are also a bit like the machines in the factory.
They do all sorts of jobs.

You can find out more about proteins, RNA and DNA in the following pages.